1153-45-3 4-11-00-00272 (Beilstein Handbook Reference) 4-Nitrophenyl tosylate AI3-03742 BRN 2390365 Benzenesulfonic acid, 4-methyl-, 4-nitrophenyl ester Phenol, p-nitro-, p-toluenesulfonate p-Nitrophenyl tosylate p-Toluenesulfonic acid, p-nitrophenyl ester